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Unaudited Condensed Consolidated Statements of Stockholders' Equity - USD ($)
$ in Thousands
Total
Common Stock [Member]
Additional Paid-in Capital [Member]
Treasury Stock [Member]
Accumulated Deficit [Member]
Accumulated Other Comprehensive Income [Member]
Beginning balance at Mar. 31, 2024 $ 3,601 $ 1 $ 343,270 $ (1) $ (339,669) $ 0
Beginning balance, Shares at Mar. 31, 2024   840,000   0    
Issuance of common stock from exercise of pre-funded warrants 1 $ 0 1 $ 0 0 0
Issuance of common stock from exercise of pre-funded warrants, Shares   115,000   0    
Issuance of common stock from public offering, net 6,248 $ 0 6,248 $ 0 0 0
Issuance of common stock from public offering, Shares   243,000   0    
Stock-based compensation expense 156 $ 0 156 $ 0 0 0
Stock-based compensation expense, Shares   0   0    
Net loss (3,344) $ 0 0 $ 0 (3,344) 0
Ending balance at Jun. 30, 2024 6,662 $ 1 349,675 $ (1) (343,013) 0
Ending balance, Shares at Jun. 30, 2024   1,198,000   0    
Beginning balance at Mar. 31, 2024 3,601 $ 1 343,270 $ (1) (339,669) 0
Beginning balance, Shares at Mar. 31, 2024   840,000   0    
Net loss (5,893)          
Ending balance at Sep. 30, 2024 3,680 $ 1 349,241 $ (1) (345,562) 1
Ending balance, Shares at Sep. 30, 2024   1,281,000   0    
Beginning balance at Jun. 30, 2024 6,662 $ 1 349,675 $ (1) (343,013) 0
Beginning balance, Shares at Jun. 30, 2024   1,198,000   0    
Issuance of common stock from exercise of pre-funded warrants 1 $ 0 1 $ 0 0 0
Issuance of common stock from exercise of pre-funded warrants, Shares   83,000   0    
Stock-based compensation expense 155 $ 0 155 $ 0 0 0
Stock-based compensation expense, Shares   0   0    
Financing Fees (590) $ 0 (590) $ 0 0 0
Financing Fees, shares   0   0    
Net loss (2,549) $ 0 0 $ 0 (2,549) 0
Unrealized gain on available-for-sale debt securities 1 $ 0 0 $ 0 0 1
Unrealized gain on available-for-sale debt securities, Shares   0   0    
Ending balance at Sep. 30, 2024 3,680 $ 1 349,241 $ (1) (345,562) 1
Ending balance, Shares at Sep. 30, 2024   1,281,000   0    
Beginning balance at Mar. 31, 2025 10,492 $ 2 352,648 $ (1) (342,157) 0
Beginning balance, Shares at Mar. 31, 2025   1,898,000   0    
Retirement of treasury stock 0   (1) $ 1 0 0
Retirement of treasury stock, shares       0    
Issuance of common stock from public offering, net 1,811 $ 1 1,810 $ 0 0 0
Issuance of common stock from public offering, Shares   702,000   0    
Stock-based compensation expense 78 $ 0 78 $ 0 0 0
Stock-based compensation expense, Shares   0   0    
Net loss (2,843) $ 0 0 $ 0 (2,843) 0
Ending balance at Jun. 30, 2025 9,538 $ 3 354,535 $ (0) (345,000) 0
Ending balance, Shares at Jun. 30, 2025   2,600,000   0    
Beginning balance at Mar. 31, 2025 10,492 $ 2 352,648 $ (1) (342,157) 0
Beginning balance, Shares at Mar. 31, 2025   1,898,000   0    
Net loss (5,388)          
Ending balance at Sep. 30, 2025 7,065 $ 3 354,607 $ 0 (347,545) 0
Ending balance, Shares at Sep. 30, 2025   2,608,000   0    
Beginning balance at Jun. 30, 2025 9,538 $ 3 354,535 $ (0) (345,000) 0
Beginning balance, Shares at Jun. 30, 2025   2,600,000   0    
Issuance of common stock under employee and director stock option, RSU, and purchase plans 0 $ 0 0 $ 0 0 0
Issuance of common stock under employee and director stock option, RSU, and purchase plans, Shares   8,000   0    
Stock-based compensation expense 72 $ 0 72 $ 0 0 0
Stock-based compensation expense, Shares   0   0    
Net loss (2,545) $ 0 0 $ 0 (2,545) 0
Ending balance at Sep. 30, 2025 $ 7,065 $ 3 $ 354,607 $ 0 $ (347,545) $ 0
Ending balance, Shares at Sep. 30, 2025   2,608,000   0